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9 Cards in this Set
- Front
- Back
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diffusion |
the movement of molecules from an area of high concentration to an area of low concentration. Continues to equilibrium. |
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Molecules are always: ___ |
moving. Molecules move randomly and bump into each other and other barriers |
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Why does diffusion occur? |
Diffusion occurs because of molecules intermingling as a result of kinetic energy of random motion, moving from highly concentrated areas to lowly concentrated areas until it reaches a state of equilibrium |
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Factors affecting diffusion (8) |
temperature - higher, faster surface area - larger, faster concentration gradient - higher, faster size of particles - smaller, faster |
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osmosis |
the diffusion of water across a semi-permeable membrane |
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hypotonic |
less solute in the solution than the cell inside |
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hypertonic |
more solute in the solution than the cell inside |
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isotonic |
no net loss or gain |
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what do both diffusion and osmosis have in common? |
they both move to create equilibrium |
